Extern or forward variable declaration at include/video/of_videomode.h, line 12 References: drivers/gpu/drm/drm_modes.c, line 588 drivers/gpu/drm/drm_modes.c, line 630 drivers/gpu/drm/drm_modes.c, line 673 drivers/gpu/drm/drm_modes.c, line 712 drivers/gpu/drm/exynos/exynos_dp.c, line 42 drivers/gpu/drm/exynos/exynos_drm_dpi.c, line 32 drivers/gpu/drm/exynos/exynos_drm_dpi.c, line 166 drivers/gpu/drm/exynos/exynos_drm_mic.c, line 102 drivers/gpu/drm/exynos/exynos_drm_mic.c, line 157 drivers/gpu/drm/exynos/exynos_drm_mic.c, line 181 drivers/gpu/drm/exynos/exynos_drm_mic.c, line 192 drivers/gpu/drm/panel/panel-ilitek-ili9322.c, line 277 drivers/gpu/drm/panel/panel-lg-lg4573.c, line 32 drivers/gpu/drm/panel/panel-samsung-ld9040.c, line 98 drivers/gpu/drm/panel/panel-samsung-s6e8aa0.c, line 105 drivers/video/fbdev/atmel_lcdfb.c, line 952